There are various types of chemical changes that can yield exothermic and endothermic peaks in DTA and DSC. Some examples include:
Exothermic:
- Combustion reactions
- Oxidation reactions
- Decomposition reactions
- Solid-state reactions, such as the formation of metal alloys
- Polymerization reactions
Endothermic:
- Melting of solids
- Sublimation of solids
- Dissolution of solids in solvents
- Desorption of gases from surfaces (e.g. water evaporation)
- Solid-state transformations, such as phase transitions or crystallographic changes
It is important to note that the specific type of reaction and conditions under which it occurs can influence the size, shape, and location of the peaks observed in DTA and DSC analyses.
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